手动螺旋闸阀
Manual spirat gate valves
Manual spirat gate valves
![]() | ![]() | 产品型号Product Model: QDZM-X 公称通径Nominal Diameter: 200×200-700 ×700mm 阀体材质Nominal Pressure:铸钢、不锈钢 适用温度Suitable temperature: -29°C~120°C 适用介质Suitable Medium: 污水、给排水 Sewage, water supply and drainage |